[PATCH] zd1211rw: Add AL7230B RF support for ZD1211B

This patch adds support for some new ZD1211B devices which ship with
the AL7230B RF.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 267 insertions, 50 deletions

diff --git a/drivers/net/wireless/zd1211rw/zd_rf_al7230b.c b/drivers/net/wireless/zd1211rw/zd_rf_al7230b.c
index d2c3ee69df8..5e5e9ddc6a7 100644
--- a/drivers/net/wireless/zd1211rw/zd_rf_al7230b.c
+++ b/drivers/net/wireless/zd1211rw/zd_rf_al7230b.c
@@ -51,9 +51,52 @@ static const u32 std_rv[] = {
 	0xd8c010,
 };
 
-static int al7230b_init_hw(struct zd_rf *rf)
+static const u32 rv_init1[] = {
+	0x3c9000,
+	0xbfffff,
+	0x700000,
+	0xf15d58,
+};
+
+static const u32 rv_init2[] = {
+	0xf15d59,
+	0xf15d5c,
+	0xf15d58,
+};
+
+static const struct zd_ioreq16 ioreqs_sw[] = {
+	{ CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
+	{ CR38,  0x38 }, { CR136, 0xdf },
+};
+
+static int zd1211b_al7230b_finalize(struct zd_chip *chip)
 {
-	int i, r;
+	int r;
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ CR80,  0x30 }, { CR81,  0x30 }, { CR79,  0x58 },
+		{ CR12,  0xf0 }, { CR77,  0x1b }, { CR78,  0x58 },
+		{ CR203, 0x04 },
+		{ },
+		{ CR240, 0x80 },
+	};
+
+	r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+	if (r)
+		return r;
+
+	if (chip->new_phy_layout) {
+		/* antenna selection? */
+		r = zd_iowrite16_locked(chip, 0xe5, CR9);
+		if (r)
+			return r;
+	}
+
+	return zd_iowrite16_locked(chip, 0x04, CR203);
+}
+
+static int zd1211_al7230b_init_hw(struct zd_rf *rf)
+{
+	int r;
 	struct zd_chip *chip = zd_rf_to_chip(rf);
 
 	/* All of these writes are identical to AL2230 unless otherwise
@@ -117,39 +160,136 @@ static int al7230b_init_hw(struct zd_rf *rf)
 	};
 
 	static const struct zd_ioreq16 ioreqs_2[] = {
-		/* PLL_ON */
-		{ CR251, 0x3f },
+		{ CR251, 0x3f }, /* PLL_ON */
 		{ CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
-		{ CR38, 0x38 }, { CR136, 0xdf },
+		{ CR38,  0x38 }, { CR136, 0xdf },
 	};
 
 	r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
 	if (r)
 		return r;
 
-	r = zd_rfwrite_cr_locked(chip, 0x09ec04);
+	r = zd_rfwritev_cr_locked(chip, chan_rv[0], ARRAY_SIZE(chan_rv[0]));
 	if (r)
 		return r;
-	r = zd_rfwrite_cr_locked(chip, 0x8cccc8);
+
+	r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
 	if (r)
 		return r;
 
-	for (i = 0; i < ARRAY_SIZE(std_rv); i++) {
-		r = zd_rfwrite_cr_locked(chip, std_rv[i]);
-		if (r)
-			return r;
-	}
+	r = zd_rfwritev_cr_locked(chip, rv_init1, ARRAY_SIZE(rv_init1));
+	if (r)
+		return r;
 
-	r = zd_rfwrite_cr_locked(chip, 0x3c9000);
+	r = zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
 	if (r)
 		return r;
-	r = zd_rfwrite_cr_locked(chip, 0xbfffff);
+
+	r = zd_rfwritev_cr_locked(chip, rv_init2, ARRAY_SIZE(rv_init2));
 	if (r)
 		return r;
-	r = zd_rfwrite_cr_locked(chip, 0x700000);
+
+	r = zd_iowrite16_locked(chip, 0x06, CR203);
 	if (r)
 		return r;
-	r = zd_rfwrite_cr_locked(chip, 0xf15d58);
+	r = zd_iowrite16_locked(chip, 0x80, CR240);
+	if (r)
+		return r;
+
+	return 0;
+}
+
+static int zd1211b_al7230b_init_hw(struct zd_rf *rf)
+{
+	int r;
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	static const struct zd_ioreq16 ioreqs_1[] = {
+		{ CR240, 0x57 }, { CR9,   0x9 },
+		{ },
+		{ CR10,  0x8b }, { CR15,  0x20 },
+		{ CR17,  0x2B }, /* for newest (3rd cut) AL2230 */
+		{ CR20,  0x10 }, /* 4N25->Stone Request */
+		{ CR23,  0x40 }, { CR24,  0x20 }, { CR26,  0x93 },
+		{ CR28,  0x3e }, { CR29,  0x00 },
+		{ CR33,  0x28 }, /* 5613 */
+		{ CR34,  0x30 },
+		{ CR35,  0x3e }, /* for newest (3rd cut) AL2230 */
+		{ CR41,  0x24 }, { CR44,  0x32 },
+		{ CR46,  0x99 }, /* for newest (3rd cut) AL2230 */
+		{ CR47,  0x1e },
+
+		/* ZD1215 5610 */
+		{ CR48,  0x00 }, { CR49,  0x00 }, { CR51,  0x01 },
+		{ CR52,  0x80 }, { CR53,  0x7e }, { CR65,  0x00 },
+		{ CR66,  0x00 }, { CR67,  0x00 }, { CR68,  0x00 },
+		{ CR69,  0x28 },
+
+		{ CR79,  0x58 }, { CR80,  0x30 }, { CR81,  0x30 },
+		{ CR87,  0x0A }, { CR89,  0x04 },
+		{ CR90,  0x58 }, /* 5112 */
+		{ CR91,  0x00 }, /* 5613 */
+		{ CR92,  0x0a },
+		{ CR98,  0x8d }, /* 4804, for 1212 new algorithm */
+		{ CR99,  0x00 }, { CR100, 0x02 }, { CR101, 0x13 },
+		{ CR102, 0x27 },
+		{ CR106, 0x20 }, /* change to 0x24 for AL7230B */
+		{ CR109, 0x13 }, /* 4804, for 1212 new algorithm */
+		{ CR112, 0x1f },
+	};
+
+	static const struct zd_ioreq16 ioreqs_new_phy[] = {
+		{ CR107, 0x28 },
+		{ CR110, 0x1f }, /* 5127, 0x13->0x1f */
+		{ CR111, 0x1f }, /* 0x13 to 0x1f for AL7230B */
+		{ CR116, 0x2a }, { CR118, 0xfa }, { CR119, 0x12 },
+		{ CR121, 0x6c }, /* 5613 */
+	};
+
+	static const struct zd_ioreq16 ioreqs_old_phy[] = {
+		{ CR107, 0x24 },
+		{ CR110, 0x13 }, /* 5127, 0x13->0x1f */
+		{ CR111, 0x13 }, /* 0x13 to 0x1f for AL7230B */
+		{ CR116, 0x24 }, { CR118, 0xfc }, { CR119, 0x11 },
+		{ CR121, 0x6a }, /* 5613 */
+	};
+
+	static const struct zd_ioreq16 ioreqs_2[] = {
+		{ CR113, 0x27 }, { CR114, 0x27 }, { CR115, 0x24 },
+		{ CR117, 0xfa }, { CR120, 0x4f },
+		{ CR122, 0xfc }, /* E0->FCh at 4901 */
+		{ CR123, 0x57 }, /* 5613 */
+		{ CR125, 0xad }, /* 4804, for 1212 new algorithm */
+		{ CR126, 0x6c }, /* 5613 */
+		{ CR127, 0x03 }, /* 4804, for 1212 new algorithm */
+		{ CR130, 0x10 },
+		{ CR131, 0x00 }, /* 5112 */
+		{ CR137, 0x50 }, /* 5613 */
+		{ CR138, 0xa8 }, /* 5112 */
+		{ CR144, 0xac }, /* 5613 */
+		{ CR148, 0x40 }, /* 5112 */
+		{ CR149, 0x40 }, /* 4O07, 50->40 */
+		{ CR150, 0x1a }, /* 5112, 0C->1A */
+		{ CR252, 0x34 }, { CR253, 0x34 },
+		{ CR251, 0x2f }, /* PLL_OFF */
+	};
+
+	static const struct zd_ioreq16 ioreqs_3[] = {
+		{ CR251, 0x7f }, /* PLL_ON */
+		{ CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
+		{ CR38,  0x38 }, { CR136, 0xdf },
+	};
+
+	r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
+	if (r)
+		return r;
+
+	if (chip->new_phy_layout)
+		r = zd_iowrite16a_locked(chip, ioreqs_new_phy,
+			ARRAY_SIZE(ioreqs_new_phy));
+	else
+		r = zd_iowrite16a_locked(chip, ioreqs_old_phy,
+			ARRAY_SIZE(ioreqs_old_phy));
 	if (r)
 		return r;
 
@@ -157,38 +297,36 @@ static int al7230b_init_hw(struct zd_rf *rf)
 	if (r)
 		return r;
 
-	r = zd_rfwrite_cr_locked(chip, 0xf15d59);
+	r = zd_rfwritev_cr_locked(chip, chan_rv[0], ARRAY_SIZE(chan_rv[0]));
 	if (r)
 		return r;
-	r = zd_rfwrite_cr_locked(chip, 0xf15d5c);
+
+	r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
 	if (r)
 		return r;
-	r = zd_rfwrite_cr_locked(chip, 0xf15d58);
+
+	r = zd_rfwritev_cr_locked(chip, rv_init1, ARRAY_SIZE(rv_init1));
 	if (r)
 		return r;
 
-	r = zd_iowrite16_locked(chip, 0x06, CR203);
+	r = zd_iowrite16a_locked(chip, ioreqs_3, ARRAY_SIZE(ioreqs_3));
 	if (r)
 		return r;
-	r = zd_iowrite16_locked(chip, 0x80, CR240);
+
+	r = zd_rfwritev_cr_locked(chip, rv_init2, ARRAY_SIZE(rv_init2));
 	if (r)
 		return r;
 
-	return 0;
+	return zd1211b_al7230b_finalize(chip);
 }
 
-static int al7230b_set_channel(struct zd_rf *rf, u8 channel)
+static int zd1211_al7230b_set_channel(struct zd_rf *rf, u8 channel)
 {
-	int i, r;
+	int r;
 	const u32 *rv = chan_rv[channel-1];
 	struct zd_chip *chip = zd_rf_to_chip(rf);
 
-	static const struct zd_ioreq16 ioreqs_1[] = {
-		{ CR128, 0x14 }, { CR129, 0x12 }, { CR130, 0x10 },
-		{ CR38,  0x38 }, { CR136, 0xdf },
-	};
-
-	static const struct zd_ioreq16 ioreqs_2[] = {
+	static const struct zd_ioreq16 ioreqs[] = {
 		/* PLL_ON */
 		{ CR251, 0x3f },
 		{ CR203, 0x06 }, { CR240, 0x08 },
@@ -203,11 +341,9 @@ static int al7230b_set_channel(struct zd_rf *rf, u8 channel)
 	if (r)
 		return r;
 
-	for (i = 0; i < ARRAY_SIZE(std_rv); i++) {
-		r = zd_rfwrite_cr_locked(chip, std_rv[i]);
-		if (r)
-			return r;
-	}
+	r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
+	if (r)
+		return r;
 
 	r = zd_rfwrite_cr_locked(chip, 0x3c9000);
 	if (r)
@@ -216,24 +352,69 @@ static int al7230b_set_channel(struct zd_rf *rf, u8 channel)
 	if (r)
 		return r;
 
-	r = zd_iowrite16a_locked(chip, ioreqs_1, ARRAY_SIZE(ioreqs_1));
+	r = zd_iowrite16a_locked(chip, ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
 	if (r)
 		return r;
 
-	for (i = 0; i < 2; i++) {
-		r = zd_rfwrite_cr_locked(chip, rv[i]);
-		if (r)
-			return r;
-	}
+	r = zd_rfwritev_cr_locked(chip, rv, 2);
+	if (r)
+		return r;
+
+	r = zd_rfwrite_cr_locked(chip, 0x3c9000);
+	if (r)
+		return r;
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
+static int zd1211b_al7230b_set_channel(struct zd_rf *rf, u8 channel)
+{
+	int r;
+	const u32 *rv = chan_rv[channel-1];
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+
+	r = zd_iowrite16_locked(chip, 0x57, CR240);
+	if (r)
+		return r;
+	r = zd_iowrite16_locked(chip, 0xe4, CR9);
+	if (r)
+		return r;
+
+	/* PLL_OFF */
+	r = zd_iowrite16_locked(chip, 0x2f, CR251);
+	if (r)
+		return r;
+	r = zd_rfwritev_cr_locked(chip, std_rv, ARRAY_SIZE(std_rv));
+	if (r)
+		return r;
 
 	r = zd_rfwrite_cr_locked(chip, 0x3c9000);
 	if (r)
 		return r;
+	r = zd_rfwrite_cr_locked(chip, 0xf15d58);
+	if (r)
+		return r;
 
-	return zd_iowrite16a_locked(chip, ioreqs_2, ARRAY_SIZE(ioreqs_2));
+	r = zd_iowrite16a_locked(chip, ioreqs_sw, ARRAY_SIZE(ioreqs_sw));
+	if (r)
+		return r;
+
+	r = zd_rfwritev_cr_locked(chip, rv, 2);
+	if (r)
+		return r;
+
+	r = zd_rfwrite_cr_locked(chip, 0x3c9000);
+	if (r)
+		return r;
+
+	r = zd_iowrite16_locked(chip, 0x7f, CR251);
+	if (r)
+		return r;
+
+	return zd1211b_al7230b_finalize(chip);
 }
 
-static int al7230b_switch_radio_on(struct zd_rf *rf)
+static int zd1211_al7230b_switch_radio_on(struct zd_rf *rf)
 {
 	struct zd_chip *chip = zd_rf_to_chip(rf);
 	static const struct zd_ioreq16 ioreqs[] = {
@@ -244,6 +425,17 @@ static int al7230b_switch_radio_on(struct zd_rf *rf)
 	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 }
 
+static int zd1211b_al7230b_switch_radio_on(struct zd_rf *rf)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	static const struct zd_ioreq16 ioreqs[] = {
+		{ CR11,  0x00 },
+		{ CR251, 0x7f },
+	};
+
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
 static int al7230b_switch_radio_off(struct zd_rf *rf)
 {
 	struct zd_chip *chip = zd_rf_to_chip(rf);
@@ -255,20 +447,45 @@ static int al7230b_switch_radio_off(struct zd_rf *rf)
 	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
 }
 
+/* ZD1211B+AL7230B 6m band edge patching differs slightly from other
+ * configurations */
+static int zd1211b_al7230b_patch_6m(struct zd_rf *rf, u8 channel)
+{
+	struct zd_chip *chip = zd_rf_to_chip(rf);
+	struct zd_ioreq16 ioreqs[] = {
+		{ CR128, 0x14 }, { CR129, 0x12 },
+	};
+
+	/* FIXME: Channel 11 is not the edge for all regulatory domains. */
+	if (channel == 1) {
+		ioreqs[0].value = 0x0e;
+		ioreqs[1].value = 0x10;
+	} else if (channel == 11) {
+		ioreqs[0].value = 0x10;
+		ioreqs[1].value = 0x10;
+	}
+
+	dev_dbg_f(zd_chip_dev(chip), "patching for channel %d\n", channel);
+	return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
+}
+
 int zd_rf_init_al7230b(struct zd_rf *rf)
 {
 	struct zd_chip *chip = zd_rf_to_chip(rf);
 
 	if (chip->is_zd1211b) {
-		dev_err(zd_chip_dev(chip), "AL7230B is currently not "
-			"supported for ZD1211B devices\n");
-		return -ENODEV;
+		rf->init_hw = zd1211b_al7230b_init_hw;
+		rf->switch_radio_on = zd1211b_al7230b_switch_radio_on;
+		rf->set_channel = zd1211b_al7230b_set_channel;
+		rf->patch_6m_band_edge = zd1211b_al7230b_patch_6m;
+	} else {
+		rf->init_hw = zd1211_al7230b_init_hw;
+		rf->switch_radio_on = zd1211_al7230b_switch_radio_on;
+		rf->set_channel = zd1211_al7230b_set_channel;
+		rf->patch_6m_band_edge = zd_rf_generic_patch_6m;
 	}
 
-	rf->init_hw = al7230b_init_hw;
-	rf->set_channel = al7230b_set_channel;
-	rf->switch_radio_on = al7230b_switch_radio_on;
 	rf->switch_radio_off = al7230b_switch_radio_off;
-	rf->patch_6m_band_edge = zd_rf_generic_patch_6m;
+
 	return 0;
 }